JEE Main 2021PhysicsThermodynamicsEasyNumerical

JEE Main 2021 — Thermodynamics Question with Solution

JEE Main 2021 (20 Jul Shift 1)

Question

In the reported figure, heat energy absorbed by a system in going through a cyclic process is ______πJ.

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Show full solutionCorrect answer: 100
Correct answer
100

Step-by-step explanation

For complete cyclic process
ΔU=0
∴ from ΔQ=ΔU+W
=0+W
ΔQ=W
=Area
=πr1·r2
=π×10×103×10×10-3
ΔQ=100π
∴ Answer =100

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About this question

This is a previous-year question from JEE Main 2021, covering the Thermodynamics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.